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[入门教程] 树莓派3-配置-设置分辨率

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树莓派3-配置-设置分辨率
为何设置分辨率


树莓派的debian系统中是自动扫描显示器的,很多都不会满屏显示,这样的话就需要手动设置了,但是在进入系统后是没法设置的


实现方式


需要通过配置文件(config.txt)实现。
Noobs安装的系统在/boot/config.txt,非Noobs的系统在跟目录下config.txt
实现步骤


了解显示器支持的分辨率,比如显示器是7寸HDMI显示器,分辨率是800*600


在装了系统的SD卡上根目录找到“config.txt”,搜索hdmi mode, 修改和添加如下项目


[AppleScript] 纯文本查看 复制代码
hdmi_group=****

hdmi_mode=****

hdmi_group和hdmi_mode的值对应想要调整的分辨率。文后提供CEA分辨率和DMT分辨率对照表


CEA为电视规格分辨率,DMT为计算机计算机显示器使用的分辨率


针对自身的情况,选择DMT分辨率,其中8是最接近合适的参数,更改“config.txt”为,保存退出SD卡
[AppleScript] 纯文本查看 复制代码
hdmi_group=2

hdmi_mode=8

将SD插入树莓派,正常启动!
通过程序来判断合适的分辨率
[AppleScript] 纯文本查看 复制代码
CEA supported modes:

/opt/vc/bin/tvservice -m CEA

DMT supported modes:

/opt/vc/bin/tvservice -m DMT



比如运行
[AppleScript] 纯文本查看 复制代码
[/size][/font]
[font=微软雅黑][size=3]

pi@raspberrypi:~ $ /opt/vc/bin/tvservice -m DMT

Group DMT has 2 modes:

           mode 4: 640x480 [url=home.php?mod=space&uid=811729]@[/url] 60Hz 4:3, clock:25MHz progressive 

  (prefer) mode 8: 800x600 @ 56Hz 4:3, clock:36MHz progressive
如果没有合适的分辨率, 可以设置一个,比如设置一个800*480的分辨率
[AppleScript] 纯文本查看 复制代码
hdmi_cvt=800 480 56 1

hdmi_group=2

hdmi_mode=87

hdmi_drive=2

注意事项


针对非Noobs安装的系统,根目录config.txt文件的
对于Noobs安装的系统,根目录没有config.txt文件的,进入系统的/boot/config.txt下进行修改重启
CEA分辨率


以下是CEA规定的电视规格分辨率。这些分辨率的hdmi_group=1


[AppleScript] 纯文本查看 复制代码
hdmi_mode=1    VGA

hdmi_mode=2    480p  60Hz

hdmi_mode=3    480p  60Hz  H

hdmi_mode=4    720p  60Hz

hdmi_mode=5    1080i 60Hz

hdmi_mode=6    480i  60Hz

hdmi_mode=7    480i  60Hz  H

hdmi_mode=8    240p  60Hz

hdmi_mode=9    240p  60Hz  H

hdmi_mode=10   480i  60Hz  4x

hdmi_mode=11   480i  60Hz  4x H

hdmi_mode=12   240p  60Hz  4x

hdmi_mode=13   240p  60Hz  4x H

hdmi_mode=14   480p  60Hz  2x

hdmi_mode=15   480p  60Hz  2x H

hdmi_mode=16   1080p 60Hz

hdmi_mode=17   576p  50Hz

hdmi_mode=18   576p  50Hz  H

hdmi_mode=19   720p  50Hz

hdmi_mode=20   1080i 50Hz

hdmi_mode=21   576i  50Hz

hdmi_mode=22   576i  50Hz  H

hdmi_mode=23   288p  50Hz

hdmi_mode=24   288p  50Hz  H

hdmi_mode=25   576i  50Hz  4x

hdmi_mode=26   576i  50Hz  4x H

hdmi_mode=27   288p  50Hz  4x

hdmi_mode=28   288p  50Hz  4x H

hdmi_mode=29   576p  50Hz  2x

hdmi_mode=30   576p  50Hz  2x H

hdmi_mode=31   1080p 50Hz

hdmi_mode=32   1080p 24Hz

hdmi_mode=33   1080p 25Hz

hdmi_mode=34   1080p 30Hz

hdmi_mode=35   480p  60Hz  4x

hdmi_mode=36   480p  60Hz  4xH

hdmi_mode=37   576p  50Hz  4x

hdmi_mode=38   576p  50Hz  4x H

hdmi_mode=39   1080i 50Hz  reduced blanking

hdmi_mode=40   1080i 100Hz

hdmi_mode=41   720p  100Hz

hdmi_mode=42   576p  100Hz

hdmi_mode=43   576p  100Hz H

hdmi_mode=44   576i  100Hz

hdmi_mode=45   576i  100Hz H

hdmi_mode=46   1080i 120Hz

hdmi_mode=47   720p  120Hz

hdmi_mode=48   480p  120Hz

hdmi_mode=49   480p  120Hz H

hdmi_mode=50   480i  120Hz

hdmi_mode=51   480i  120Hz H

hdmi_mode=52   576p  200Hz

hdmi_mode=53   576p  200Hz H

hdmi_mode=54   576i  200Hz

hdmi_mode=55   576i  200Hz H

hdmi_mode=56   480p  240Hz

hdmi_mode=57   480p  240Hz H

hdmi_mode=58   480i  240Hz

hdmi_mode=59   480i  240Hz H

H means 16:9 variant (of a normally 4:3 mode).

2x means pixel doubled (i.e. higher clock rate, with each pixel repeated twice)

4x means pixel quadrupled (i.e. higher clock rate, with each pixel repeated four times)

DMT分辨率
以下是计算机显示器使用的分辨率。这些分辨率的hdmi_group=2


[AppleScript] 纯文本查看 复制代码
hdmi_mode=1    640x350   85Hz

hdmi_mode=2    640x400   85Hz

hdmi_mode=3    720x400   85Hz

hdmi_mode=4    640x480   60Hz

hdmi_mode=5    640x480   72Hz

hdmi_mode=6    640x480   75Hz

hdmi_mode=7    640x480   85Hz

hdmi_mode=8    800x600   56Hz

hdmi_mode=9    800x600   60Hz

hdmi_mode=10   800x600   72Hz

hdmi_mode=11   800x600   75Hz

hdmi_mode=12   800x600   85Hz

hdmi_mode=13   800x600   120Hz

hdmi_mode=14   848x480   60Hz

hdmi_mode=15   1024x768  43Hz  DO NOT USE

hdmi_mode=16   1024x768  60Hz

hdmi_mode=17   1024x768  70Hz

hdmi_mode=18   1024x768  75Hz

hdmi_mode=19   1024x768  85Hz

hdmi_mode=20   1024x768  120Hz

hdmi_mode=21   1152x864  75Hz

hdmi_mode=22   1280x768        reduced blanking

hdmi_mode=23   1280x768  60Hz

hdmi_mode=24   1280x768  75Hz

hdmi_mode=25   1280x768  85Hz

hdmi_mode=26   1280x768  120Hz reduced blanking

hdmi_mode=27   1280x800        reduced blanking

hdmi_mode=28   1280x800  60Hz

hdmi_mode=29   1280x800  75Hz

hdmi_mode=30   1280x800  85Hz

hdmi_mode=31   1280x800  120Hz reduced blanking

hdmi_mode=32   1280x960  60Hz

hdmi_mode=33   1280x960  85Hz

hdmi_mode=34   1280x960  120Hz reduced blanking

hdmi_mode=35   1280x1024 60Hz

hdmi_mode=36   1280x1024 75Hz

hdmi_mode=37   1280x1024 85Hz

hdmi_mode=38   1280x1024 120Hz reduced blanking

hdmi_mode=39   1360x768  60Hz

hdmi_mode=40   1360x768  120Hz reduced blanking

hdmi_mode=41   1400x1050       reduced blanking

hdmi_mode=42   1400x1050 60Hz

hdmi_mode=43   1400x1050 75Hz

hdmi_mode=44   1400x1050 85Hz

hdmi_mode=45   1400x1050 120Hz reduced blanking

hdmi_mode=46   1440x900        reduced blanking

hdmi_mode=47   1440x900  60Hz

hdmi_mode=48   1440x900  75Hz

hdmi_mode=49   1440x900  85Hz

hdmi_mode=50   1440x900  120Hz reduced blanking

hdmi_mode=51   1600x1200 60Hz

hdmi_mode=52   1600x1200 65Hz

hdmi_mode=53   1600x1200 70Hz

hdmi_mode=54   1600x1200 75Hz

hdmi_mode=55   1600x1200 85Hz

hdmi_mode=56   1600x1200 120Hz reduced blanking

hdmi_mode=57   1680x1050       reduced blanking

hdmi_mode=58   1680x1050 60Hz

hdmi_mode=59   1680x1050 75Hz

hdmi_mode=60   1680x1050 85Hz

hdmi_mode=61   1680x1050 120Hz reduced blanking

hdmi_mode=62   1792x1344 60Hz

hdmi_mode=63   1792x1344 75Hz

hdmi_mode=64   1792x1344 120Hz reduced blanking

hdmi_mode=65   1856x1392 60Hz

hdmi_mode=66   1856x1392 75Hz

hdmi_mode=67   1856x1392 120Hz reduced blanking

hdmi_mode=68   1920x1200       reduced blanking

hdmi_mode=69   1920x1200 60Hz

hdmi_mode=70   1920x1200 75Hz

hdmi_mode=71   1920x1200 85Hz

hdmi_mode=72   1920x1200 120Hz reduced blanking

hdmi_mode=73   1920x1440 60Hz

hdmi_mode=74   1920x1440 75Hz

hdmi_mode=75   1920x1440 120Hz reduced blanking

hdmi_mode=76   2560x1600       reduced blanking

hdmi_mode=77   2560x1600 60Hz

hdmi_mode=78   2560x1600 75Hz

hdmi_mode=79   2560x1600 85Hz

hdmi_mode=80   2560x1600 120Hz reduced blanking

hdmi_mode=81   1366x768  60Hz

hdmi_mode=82   1080p     60Hz

hdmi_mode=83   1600x900        reduced blanking

hdmi_mode=84   2048x1152       reduced blanking

hdmi_mode=85   720p      60Hz

hdmi_mode=86   1366x768        reduced blanking

转自:创客智造

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